Heater.



No.81Z900. PATENTED APR.17,1906

H.H.BRANDE&

HEATER.

APPLICATION FILED APR. 3, 1905.

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HEATER.

Specification of Letters Patent.

Patented Aprii 17, 190e.

Application filed April 3, 1905. Serial No. 253.576.

To all 'wl/1,0171, t may concern:

Be it known that I, HERMAN H. BRANDEs, a citizen of the United States, residing at Corydon, in the county of Henderson and State of Kentucky, have invented certain new and useful Im rovements in Heaters; and I do declare the ollowing to be a full, clear, and eX- act description of the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

My invention relates to improvements in hot-air heaters for use in chimneys over open ire-grates, and particularly to that class of such devices by means of which hot air may be supplied to one or more rooms of a house or building.

The object of'the invention is to improve and simplify the construction of heating devices of this character, and thereby render the same more eilicient in use and less eXpen sive to manufacture and install.

With the above and other objects in view the invention consists of certain novel features of construction, combination, and arrangement of parts, as will be hereinafter described and claimed.

In the accompanying drawin s, Figure 1 is a front elevation of an open igireplace with my improved heater applied thereto, parts being broken away to more clearly illustrate the construction. Fig. 2 is a vertical sectional view taken on the line 2 2 in Fig. 1, and Fig. 3 is a perspective view of the rear side of the heater removed from the fireplace.

Referring to the drawings by numerals, 1 denotes an open fireplace, 2 the usual grate mounted therein, and 3 my improved heater, which is disposed within the fireplace or chimney and above said grate. The heater 3 comprises a shell or casing 1, which is of substan tially rectangular form and has its front wall 5 inclined upwardly and inwardly, as shown. Arranged longitudinally within this closed hot-air casing at some distance above the bottoms of its sides and ends is a transverselycurved baffle 6, which forms the bottom of said shell or casing. This baille forms a substantially semicylindrical heat-retaining pocket or chamber 7 and is of less length and width than the shell 3, so that hollow depending portions or legs 8 are formed at the lower end of the bottom of the shell 3. One or more cold-air-inlet pipes 9 open into these legs 8 at the rear and sides or ends of the shell 3, so as to supply fresh air to the same at a point where the heat is greatest. One or more air fresh air may be obtained. Extending verti.

cally or downwardly through the shell or cas- .ing 3 is a smoke pipe or passage 11, which,

as clearly shown in Fig. 3, is of rectangular form and of slightly-less length than the length of the shell 3. rIhe lower end of the smoke-passage 11 opens into the heat-retaining pocket 7 at its rear side, as shown at 12. In the upper portion of the smoke-passage 1 1 at a point adjacent to the to of the shell 3 is arranged a damper 13, whic may be of any desired form. As shown, this damper is in the form of a pivoted plate provided with an operating lever or handle 14. Arranged in the bottom of the shell or casing 3, immediately above the grate and beneath the pocket 7 and the lower end 12 of the smoke-passage 11, is a deflector 15, which is slightly curved in cross-section and formed with longitudinal series of openings or perforations 16. These perforations are disposed directly beneath the heat retaining pocket 7, so that the smoke, gases, and products of combustion as they arise from the grate pass through said openings 16 and strike the rentrant surface 17 of the baffle 6 and are deflected down* wardly into the lower end 12 of the smokepassage 11. The front wall of the shell eX- tends downwardly, as shown at 15a, below the under side of the dei'lector 15, so that the smoke and gases will be prevented from passing into the room.

The construction, use, and advantages of the invention will be readily understood fromy the foregoing description taken in connection with the accompanying drawings. It will be seen that since the shell 3 is entirely air-tight and dust-tight the fresh air entering through the pipes 9 will become heated by reason of its contact with the heated surfaces of the legs 8, the baille 6, and smoke-pipe 11 and then pass off through the pipes 10 to the desired point without becoming contaminated by the smoke and Gases from the fire. The provision of the bafle 6 within the shell 3 so as to form the heat-retaining pocket 7 and arrangement of the smoke-pipe 11, as shown, greatly increases the efficiency of the device,

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The damper 13, it will be understood, may be closed after the fire in the grate 2 has burned sufficiently to consume the smoke and other gases, so that the entire heat from the fire will be utilized. In case more of the pipes 9 and l0 are provided upon the heater than are desired to be used suitable caps or closures may be provided upon the ends of those which are vnot to be used. v

While I have shown and described thepren ferred embodiment of my invention, it will be understood that I do not wish to be limited to the precise construction herein set forth, since various changes in the form, proportion,` and the minor details of construction maybe re` sorted to without departing from the principle or sacrificing any of the advantages of thisy invention.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. Ahot-air heater for open fireplaces, comprising a casing to be placed in a chimney and above a grate or burner, said casing having a top, sides and a bottom, the latter having openings, and a smoke-flue in the casing, ex'- tending upwardly therethrough, spaced from the rear and end walls thereof and having its lower portion formed by a baffle above the bottom of the casing and forming a heat-retaining pocket, said casing being provided with air inlet and outlet openings.

2. Ahot-air heater for open fireplaces, comprising a casing having an air-heating chamber formed with a pocket at its lower side, a 'liuc extending through said chamber and open at its lower end into said pocket, and a baffle at the lower end of the flue and under the pocket and causing the draft to pass upwardly and forwardly under the baffle, `into the pocket, and'from thence rearwardly into the lower end of the flue.v

In testimony whereof I have hereunto 'set my hand in'presence of'two subscribing witnesses.

HERMAN II. l BRANDES.

`-IVitnesses E. S. KING, C. I. BUCKMAN. 

